One vertex per element, one color per generator, with an edge from x to x·s.
(2,4)(7,8)(10,11)(15,19)(18,20)(21,22,26,27)(23,28,31,34)(24,32,35,29)(25,30,36,33)(5,6,9,12)(7,10,8,11)(14,17)(18,20)(22,27)(23,31)(29,32)(30,33)(5,7,9,8)(6,10,12,11)(13,14,16,17)(15,18,19,20)(21,23)(22,28)(24,33)(25,32)(26,31)(27,34)(29,36)(30,35)(1,2,3,4)(13,15)(14,18)(16,19)(17,20)(21,24)(22,29)(23,30)(25,28)(26,35)(27,32)(31,33)(34,36)(5,8,9,7)(6,11,12,10)(21,25)(22,30)(23,32)(24,34)(26,36)(27,33)(28,35)(29,31)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.